244
Appendix D
Table D.5 continued
Component or part
Upper extreme Mean t6/10 6 Lower extreme
Pump, variable displacement
(hyd.) miniature
Pumps, vane, miniature
0.0005 hr
0.00025 hr
0.00003 hr
0.002 hr
Recorders, video-tape
0.005 hr
0.002 hr
0.001 hr
Rectifiers
0.04 hr
0.021 hr
0.003 hr
Regulator, flow and pressure
0.001 hr
Regulator, pressure pneumatic
0.04 hr
Regulator, gas pressure
0.0015 hr
Regulators, voltage
0.04 hr
0.02 hr
0.005 hr
Relays, general-purpose
0.7 cycle
0.2 cycle
0.02 cycle
Relays, heavy-duty
0.2 cycle
0.145 cycle
0.02 cycle
Relays, sensitive
0.3 cycle
0.2 cycle
0.02 cycle
Resistors, carbon deposit
0.05 hr
0.015 hr
0.012 hr
Resistors, composition
0.04 hr
0.014 hr
0.011 hr
Resistors, variable, composition
0.017 hr
0.016 hr
0.014 hr
Resolver
0.002 hr
Rheostat
0.03 hr
Ring, seal
0.001 min
Rotor
0.01 hr
Seals, mechanical
0.01 hr
0.007 hr
0.003 hr
Seals, electronic
0.01 hr
Sensor, temperature
0.01 hr
Sensors, pressure differential,
bellows type
1.0 cycle
0.35 cycle
0.01 cycle
Servo
0.065 hr
0.04 hr
0.02 hr
Socket, electron tube
0.02 hr
Solar collector
0.0035 hr
Solar cells
0.000720 hr
Solenoids
100.0 cycles
60.0 cycles
20 cycles
Spark plug
0.0025 hr
Switches
0.05 cycle
0.03 cycle
0.01 cycle
Switch, cam
0.01 cycle
Switch, miniature
0.2 cycle
Tachometers
0.016 hr
0.01 hr
Thermostats
0.5 cycle
0.25 cycle
Timers, electronic
0.02 hr
0.01 hr
Timer, pneumatic
0.0025 hr
Timer, high-precision totalizer
2.0 cycles
Timer, elementary
0.04 hr
0.005 hr
0.02 cycle
0.005 hr